Irregular Verbs of English, developed by Andrey Solovyev, is a free iPhone app that helps users learn English grammar and language. The app contains more than 200 important English irregular verbs and their conjugation. With this app, users can choose the learning method that best suits them. They can learn by spelling three verb forms, guessing the verb from its definition in English, or using flashcards or a table of all verb forms.

The app is easy to navigate, and it offers a user-friendly interface. The in-app purchase option allows users to remove advertisements. Irregular Verbs of English is an essential app for everyone learning the English language and grammar. It is suitable for beginners, intermediate, and advanced learners who want to improve their English skills. With its comprehensive content and engaging learning methods, Irregular Verbs of English is a must-have app for English learners.